Sorry it has taken me so long to reply. Unfortunately, it does not appear that it is possible to format the card text in the way you want when printing. The HTML formatting does work on the card within the program, but not when printed out.

It does only display 3 lines for the answer but you can get more text printed if you put some text in the answer example field - unfortunately the HTML formatting in the example field prints out too, but it would give you a little more space for plain text.

If you absolutely want to print these cards with this sort of multi-line formatting, the only idea I have, which is a lot of work, is you could format the text however you want in an image and then add the image containing the text you want to each card.

Sorry for the late answer and yes you can by using the HTML tags <sup>SUPER</sup> and <sub>SUB</sub> tags, BUT if you use them in the answer it must also be included in the entered answer, whcih is not very nice, but kan be worked around by using Self-Assesment mode.